Ventilator for cars.



A. H. MARDEN.

VENTILATOR FOB. GARS.

APPLICATION FILED 11110.26, 1912.

Patented Jan. 13, 1914.

PLANDGRAPH co.. WASHINGTON. D. c.

UN 1F; SAS PATENT FFlC.

.ALDIS H. MARDEN, OF SOMEBVLLE, MASSACHUSETTS.

VENTILATOR FOR CARS.

reageer.

To all whom it may concern.'

Be it known that l, ALDIs H. MARDEN, a citizen of the United States, residing at Somerville, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Ventilators for Cars, of which the following is a specification.

This invention relates to ventilators for cars.

The object of the invention is to provide a simple, inexpensive ventilator to be attached to the exterior of a car in alinement with an opening formed therein, said ventilator being so constructed that by moving said car in either direction a suction will be created through said side opening, whereby the foul air from the upper portion or cupola of said car may be drawn outwardly through said opening and said ventilator, this action taking place simultaneously with the movement of said car in one direction or the other without necessitating the manipulation of dampers or gates.

Another object of the invention is to provide a ventilator adapted to prevent currents of air, cinders or rain from passing into the opening in said car, thus obviating the necessity of closing said opening in case of sudden showers, or from the expulsion of an unusual amount of cinders or smoke from the locomotive.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a transverse section through the deck portion of a car with a pair of ventilators embodying my invention illustrated in connection therewith. Fig. 2 is a side elevation of one of the ventilators embodying my invention. Fig. 3 is a transverse section, partly in elevation, taken on line 3 3 of Fig. 2. Fig. 4 is a sectional plan taken on line 4-41 of Fig.- 2. Fig. 5 is a sect-ion taken on line 5-5 of Fig. 2 showing one of the deiiectors in cross section. Fig. 6 is a perspective view of one of the deflectors with its aperture indicated by dotted lines.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 7 is the upper portion of a car which is provided with the usual cupola 8 comprising side walls 9--9 having openings 10-10 extending therethrough.

Specicaton of Letters Patent.

Application filed August 26, 1912.

Patented Jan. 13, 1914:.

Serial No. 717,059.

Secured to the exterior of the side walls 9 and covering the openings 1() are ventilators 11 which comprise a casing 12. This casing is preferably in the form of an inverted letteuU with a flange 13 at one end thereof, which may be formed integral with said casing 12 or may be formed independently of said casing and secured thereto in any suitable manner, having holes 14 by means of which said casing may be secured to the wall 9. The end of the casing 12 to which the fiange 18 is secured is preferably open, while the opposite end of said casing is provided with a wall 15 whose inner face 16 is preferably concave. The casing 12 is further provided with apertures 17 arranged in thc opposite sides thereof and preferably rectangular in shape, one of said apertures facing toward the forward end, while the other of said apertures faces toward the rear end of said car, both of said apertures being located adjacent to the lower edges of said casing.

Arranged within the casing 12 are deflectors 1S which are so constructed and occupy such positions relatively to the apertures 17 that any currents of air entering one or the other of said apertures must contact with one or the other of said deflectors, whereby said currents of air will be directed against the concave face 16, striking said face at such an angle that they will again be deflected and discharged downwardly through the opening 19 at'the bottom of said casing 12. To accomplish this and insure the passage of said current in the proper direction, the deflectors 18 are secured at one of their edges along the edge 2O of the apertures 17, while the top edges 21 of said deflectors 18 are secured along the upper margin 22 of said aperture 17. The deflectors 18 are still further constructed in such a manner that they converge inwardly from the edges 20 of said apertures until portions of their outer free edges 23 intersect each other as at 24h at which point said defiectors are connected together. The lower edges 25 of the deflectors 18 are substantially in alinement fo-r the greater portion of their lengths with the lower edges of the casing 12, but curve upwardly at 26 to the intersecting point 24, thus leaving a il-shaped passage 27 connecting beneath said deiiectors the portion of the chamber at the outer ends of said deflectors with the chamber formed by the portion of the casing at the rear of said deflectors, while a passage 27 is formed connecting said chambers above said deiectors. 1n consequence of the peculiar configuration of the deflectors 18 and the mannerin which they are secured to the edges of the apertures 17, the shape which said deflectors assume in their positions within said casing 12 will be in cross section substantially the form of a sco-tia, thereby facilitating the deflection of the currents of air striking thereagainst in the desired direction.

The general operation of the device hereinbefore specifically described is as follows: The ventilator 11 is secured by bolts or screws passing through the holes 14 in the flanges 13 to the wall 9 of the cupola 8, covering the opening 10, which is preferably of the same shape as the opening in the end of the casing 12, and alines with said casing opening, the bottom opening 19 being but a slight distance above the deck of the car, while one of the apertures 17 faces toward the forward end of the car and the other of said apertures 17 faces toward the rear of said car. Assuming now that the car is being moved in the direction of the arrow a, F ig. 4, the air currents created by the movement of said car are forced through the aperture 17 in the direction of the arrows b against the deflector 18 from which they are deflected owing to the angle and curvature of said deflector against the con cave face 16, thence downwardly and out of said casing through the bottom opening 19. By the movements of the currents indicated by the arrows b through said casing a suction is created at the rear of said deflectors 18, whereby other currents of air indicated by the arrow c will be drawn or sucked into the casing 12 through the opening 10, portions of said current ipassing downwardly through the larger part of said bottom opening at the rear of said deilectors, while other portions of said currents pass downwardly through the V-shaped passage 27, and still other currents will pass over said deflectors through the passage 27, all of said currents uniting with the currents E beneath said casing 12. As a result of this suc tion the bad air in the cupola of said car will be drawn outwardly and discharged through the opening 19. In the same manner in which the currents of air are deflected as they enter the apertures 17 it will be obvious that any dust or rain caught by said casing will be directed in the same manner downwardly and away from said ventilator, thus preventing any of the same from being carried through the opening 10 into the car. Upon the reversal of the movement of the ear the currents of air will be forced through the aperture 17 upon the opposite side of said casing and against the deflector arranged adjacent thereto, in exactly the same manner as above stated. v

Although I have shown and described my invention in its preferred form as comprising an inverted U-shaped casing having an aperture in each side and a deflector for each of said apertures, it will be obvious that independent casings of suitable shapes may be employed with apertures and deflectors, as hereinbefore described, arranged in such a manner that one of said casings will ventilate the car while moving in one direction, and the other of said casings will ventilate said car when moving in the opposite direction Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A ventilator for cars comprising an inverted Ushaped casing having an opening at the bottom and at one end, said casing provided at the opposite end thereof with a wall having an interior concave face, said casing also having an aperture in each of the sides thereo-f, and means located within said casing adjacent to said apertures adapted to cooperate with the interior concave face of said end Wall to create a suction through the open end of said casing.

2. A ventilator for cars comprising a casing having an openinof at the bottom and at one end, said casing jso having an aperture in each of the side walls thereof, a downwardly and outwardly sloping wall adapted to close the other end of said casing, a pair of ciuvilinear detiectors, one of said deflectors being secured at one side and at the top thereof to the inner side and top niargins of each of said apertures, said defiectors converging inwardly toward the center of said casing and said sloping end wall and connected together at portions of their outer free edges and forming a passage above said deflectors, said deflect-ors adapted to deflect currents of air entering said apertures downwardly against said sloping end wall and outwardly through the bottom of said casing.

3. A ventilator for cars comprising an inverted Ushaped casing having an opening at the bottom and at one end, a flange secured to the outer edge of said casing at said open end, a wall closing the opposite end of said casing, said wall having a concave inner face, said casing also having a rectangular aperture formed in each of the side walls thereof, and a pair of deflectors secured within said casing, one of said deflectors being secured at one side and the top thereof to the inner side and top margins of each of said apertures, respectively, said deflectors having in cross section substantially the form of a scotia curve, the outer free edges of said deflectors being secured together midway of said casing adjacent to the concave face of said end wall, whereby the air is deflected downwardly from said deflectors and from said end wall and out through the bottom of said casing.

4. In a ventilator for cars, a casing closed at the top and at one end and Open at the bottom and at the opposite end, a downwardly and outwardly curving wall at said closed end said easing having an aperture in each of the side walls thereof7 a deflector arranged within said casing adjacent to each of said apertures, said delector extending inwardly from the inner side and top inargins of said apertures, respectively, to a meeting point at the center of said casing and providing a passage above and below said meeting point, said deflectors adapted to direct currents of air entering said apertures downwardly against said curved end wall from whence said currents of air will be deflected outwardly through the bottom of said casing, whereby a suction will be 20 nesses.

ALDIS H. BIARDEN. Witnesses:

MARGARET E. HORN, SYDNEY E. TAFT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

